I have owned a 352 and traded it in for a 402. They are both very good amps but the 402 is markedly better than the 352. If you can buy thge 402 I would suggest that you go that direction. The 402 has a few improvements beyond the additional 50 watts of power. But they added a better power supply that I noticed after burn in on several recordings that the bass transients were much more fluid, and timly in response at higher volumes. ALso the LED lights for the meters were a selling point form as I changed the bulbs in the 352 many times and that is no easy chore. The connectors are of a higher quality than those used on the 352. I believe if memory serves the 402 weighs about 15-20 pounds more than the 352. SO al in all as much as I loved the 352 the 402 has enough improvement in overall ownership advantage I would go with the 402. And from what a dealer told me that had both a 402 and 452 on the floor at one time, he preferred the 402, but that could be that he knew a trade was going to shock me.